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openldap  2.4.31
Functions
add.c File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"

Go to the source code of this file.

Functions

int bdb_add (Operation *op, SlapReply *rs)

Function Documentation

int bdb_add ( Operation op,
SlapReply rs 
)

Definition at line 25 of file add.c.

{
       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
       struct berval pdn;
       Entry         *p = NULL, *oe = op->ora_e;
       EntryInfo     *ei;
       char textbuf[SLAP_TEXT_BUFLEN];
       size_t textlen = sizeof textbuf;
       AttributeDescription *children = slap_schema.si_ad_children;
       AttributeDescription *entry = slap_schema.si_ad_entry;
       DB_TXN        *ltid = NULL, *lt2;
       ID eid = NOID;
       struct bdb_op_info opinfo = {{{ 0 }}};
       int subentry;
       DB_LOCK              lock;

       int           num_retries = 0;
       int           success;

       LDAPControl **postread_ctrl = NULL;
       LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
       int num_ctrls = 0;

#ifdef LDAP_X_TXN
       int settle = 0;
#endif

       Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
              op->ora_e->e_name.bv_val, 0, 0);

#ifdef LDAP_X_TXN
       if( op->o_txnSpec ) {
              /* acquire connection lock */
              ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
              if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
                     rs->sr_text = "invalid transaction identifier";
                     rs->sr_err = LDAP_X_TXN_ID_INVALID;
                     goto txnReturn;
              } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
                     settle=1;
                     goto txnReturn;
              }

              if( op->o_conn->c_txn_backend == NULL ) {
                     op->o_conn->c_txn_backend = op->o_bd;

              } else if( op->o_conn->c_txn_backend != op->o_bd ) {
                     rs->sr_text = "transaction cannot span multiple database contexts";
                     rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
                     goto txnReturn;
              }

              /* insert operation into transaction */

              rs->sr_text = "transaction specified";
              rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;

txnReturn:
              /* release connection lock */
              ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );

              if( !settle ) {
                     send_ldap_result( op, rs );
                     return rs->sr_err;
              }
       }
#endif

       ctrls[num_ctrls] = 0;

       /* check entry's schema */
       rs->sr_err = entry_schema_check( op, op->ora_e, NULL,
              get_relax(op), 1, NULL, &rs->sr_text, textbuf, textlen );
       if ( rs->sr_err != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": entry failed schema check: "
                     "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
              goto return_results;
       }

       /* add opattrs to shadow as well, only missing attrs will actually
        * be added; helps compatibility with older OL versions */
       rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
       if ( rs->sr_err != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": entry failed op attrs add: "
                     "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
              goto return_results;
       }

       if ( get_assert( op ) &&
              ( test_filter( op, op->ora_e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
       {
              rs->sr_err = LDAP_ASSERTION_FAILED;
              goto return_results;
       }

       subentry = is_entry_subentry( op->ora_e );

       if( 0 ) {
retry: /* transaction retry */
              if( p ) {
                     /* free parent and reader lock */
                     if ( p != (Entry *)&slap_entry_root ) {
                            bdb_unlocked_cache_return_entry_r( bdb, p );
                     }
                     p = NULL;
              }
              rs->sr_err = TXN_ABORT( ltid );
              ltid = NULL;
              LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
              opinfo.boi_oe.oe_key = NULL;
              op->o_do_not_cache = opinfo.boi_acl_cache;
              if( rs->sr_err != 0 ) {
                     rs->sr_err = LDAP_OTHER;
                     rs->sr_text = "internal error";
                     goto return_results;
              }
              if ( op->o_abandon ) {
                     rs->sr_err = SLAPD_ABANDON;
                     goto return_results;
              }
              bdb_trans_backoff( ++num_retries );
       }

       /* begin transaction */
       rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, 
              bdb->bi_db_opflags );
       rs->sr_text = NULL;
       if( rs->sr_err != 0 ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
                     db_strerror(rs->sr_err), rs->sr_err, 0 );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       opinfo.boi_oe.oe_key = bdb;
       opinfo.boi_txn = ltid;
       opinfo.boi_err = 0;
       opinfo.boi_acl_cache = op->o_do_not_cache;
       LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );

       /*
        * Get the parent dn and see if the corresponding entry exists.
        */
       if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) {
              pdn = slap_empty_bv;
       } else {
              dnParent( &op->ora_e->e_nname, &pdn );
       }

       /* get entry or parent */
       rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
              1, &lock );
       switch( rs->sr_err ) {
       case 0:
              rs->sr_err = LDAP_ALREADY_EXISTS;
              goto return_results;
       case DB_NOTFOUND:
              break;
       case DB_LOCK_DEADLOCK:
       case DB_LOCK_NOTGRANTED:
              goto retry;
       case LDAP_BUSY:
              rs->sr_text = "ldap server busy";
              goto return_results;
       default:
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       p = ei->bei_e;
       if ( !p )
              p = (Entry *)&slap_entry_root;

       if ( !bvmatch( &pdn, &p->e_nname ) ) {
              rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
                     op->o_tmpmemctx );
              rs->sr_ref = is_entry_referral( p )
                     ? get_entry_referrals( op, p )
                     : NULL;
              if ( p != (Entry *)&slap_entry_root )
                     bdb_unlocked_cache_return_entry_r( bdb, p );
              p = NULL;
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": parent "
                     "does not exist\n", 0, 0, 0 );

              rs->sr_err = LDAP_REFERRAL;
              rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
              goto return_results;
       }

       rs->sr_err = access_allowed( op, p,
              children, NULL, ACL_WADD, NULL );

       if ( ! rs->sr_err ) {
              switch( opinfo.boi_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }

              if ( p != (Entry *)&slap_entry_root )
                     bdb_unlocked_cache_return_entry_r( bdb, p );
              p = NULL;

              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": no write access to parent\n",
                     0, 0, 0 );
              rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              rs->sr_text = "no write access to parent";
              goto return_results;;
       }

       if ( p != (Entry *)&slap_entry_root ) {
              if ( is_entry_subentry( p ) ) {
                     bdb_unlocked_cache_return_entry_r( bdb, p );
                     p = NULL;
                     /* parent is a subentry, don't allow add */
                     Debug( LDAP_DEBUG_TRACE,
                            LDAP_XSTRING(bdb_add) ": parent is subentry\n",
                            0, 0, 0 );
                     rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
                     rs->sr_text = "parent is a subentry";
                     goto return_results;;
              }

              if ( is_entry_alias( p ) ) {
                     bdb_unlocked_cache_return_entry_r( bdb, p );
                     p = NULL;
                     /* parent is an alias, don't allow add */
                     Debug( LDAP_DEBUG_TRACE,
                            LDAP_XSTRING(bdb_add) ": parent is alias\n",
                            0, 0, 0 );
                     rs->sr_err = LDAP_ALIAS_PROBLEM;
                     rs->sr_text = "parent is an alias";
                     goto return_results;;
              }

              if ( is_entry_referral( p ) ) {
                     /* parent is a referral, don't allow add */
                     rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
                            op->o_tmpmemctx );
                     rs->sr_ref = get_entry_referrals( op, p );
                     bdb_unlocked_cache_return_entry_r( bdb, p );
                     p = NULL;
                     Debug( LDAP_DEBUG_TRACE,
                            LDAP_XSTRING(bdb_add) ": parent is referral\n",
                            0, 0, 0 );

                     rs->sr_err = LDAP_REFERRAL;
                     rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
                     goto return_results;
              }

       }

       if ( subentry ) {
              /* FIXME: */
              /* parent must be an administrative point of the required kind */
       }

       /* free parent and reader lock */
       if ( p != (Entry *)&slap_entry_root ) {
              if ( p->e_nname.bv_len ) {
                     struct berval ppdn;

                     /* ITS#5326: use parent's DN if differs from provided one */
                     dnParent( &op->ora_e->e_name, &ppdn );
                     if ( !dn_match( &p->e_name, &ppdn ) ) {
                            struct berval rdn;
                            struct berval newdn;

                            dnRdn( &op->ora_e->e_name, &rdn );

                            build_new_dn( &newdn, &p->e_name, &rdn, NULL ); 
                            if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val )
                                   ber_memfree( op->ora_e->e_name.bv_val );
                            op->ora_e->e_name = newdn;

                            /* FIXME: should check whether
                             * dnNormalize(newdn) == e->e_nname ... */
                     }
              }

              bdb_unlocked_cache_return_entry_r( bdb, p );
       }
       p = NULL;

       rs->sr_err = access_allowed( op, op->ora_e,
              entry, NULL, ACL_WADD, NULL );

       if ( ! rs->sr_err ) {
              switch( opinfo.boi_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }

              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": no write access to entry\n",
                     0, 0, 0 );
              rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              rs->sr_text = "no write access to entry";
              goto return_results;;
       }

       /* 
        * Check ACL for attribute write access
        */
       if (!acl_check_modlist(op, oe, op->ora_modlist)) {
              switch( opinfo.boi_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }

              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": no write access to attribute\n",
                     0, 0, 0 );
              rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              rs->sr_text = "no write access to attribute";
              goto return_results;;
       }

       if ( eid == NOID ) {
              rs->sr_err = bdb_next_id( op->o_bd, &eid );
              if( rs->sr_err != 0 ) {
                     Debug( LDAP_DEBUG_TRACE,
                            LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
                            rs->sr_err, 0, 0 );
                     rs->sr_err = LDAP_OTHER;
                     rs->sr_text = "internal error";
                     goto return_results;
              }
              op->ora_e->e_id = eid;
       }

       /* nested transaction */
       rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, 
              bdb->bi_db_opflags );
       rs->sr_text = NULL;
       if( rs->sr_err != 0 ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
                     "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       /* dn2id index */
       rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->ora_e );
       if ( rs->sr_err != 0 ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
                     db_strerror(rs->sr_err), rs->sr_err, 0 );

              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              case DB_KEYEXIST:
                     rs->sr_err = LDAP_ALREADY_EXISTS;
                     break;
              default:
                     rs->sr_err = LDAP_OTHER;
              }
              goto return_results;
       }

       /* attribute indexes */
       rs->sr_err = bdb_index_entry_add( op, lt2, op->ora_e );
       if ( rs->sr_err != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
                     0, 0, 0 );
              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              default:
                     rs->sr_err = LDAP_OTHER;
              }
              rs->sr_text = "index generation failed";
              goto return_results;
       }

       /* id2entry index */
       rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->ora_e );
       if ( rs->sr_err != 0 ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
                     0, 0, 0 );
              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              default:
                     rs->sr_err = LDAP_OTHER;
              }
              rs->sr_text = "entry store failed";
              goto return_results;
       }

       if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "txn_commit(2) failed";
              goto return_results;
       }

       /* post-read */
       if( op->o_postread ) {
              if( postread_ctrl == NULL ) {
                     postread_ctrl = &ctrls[num_ctrls++];
                     ctrls[num_ctrls] = NULL;
              }
              if ( slap_read_controls( op, rs, op->ora_e,
                     &slap_post_read_bv, postread_ctrl ) )
              {
                     Debug( LDAP_DEBUG_TRACE,
                            "<=- " LDAP_XSTRING(bdb_add) ": post-read "
                            "failed!\n", 0, 0, 0 );
                     if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
                            /* FIXME: is it correct to abort
                             * operation if control fails? */
                            goto return_results;
                     }
              }
       }

       if ( op->o_noop ) {
              if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
                     rs->sr_text = "txn_abort (no-op) failed";
              } else {
                     rs->sr_err = LDAP_X_NO_OPERATION;
                     ltid = NULL;
                     goto return_results;
              }

       } else {
              struct berval nrdn;

              /* pick the RDN if not suffix; otherwise pick the entire DN */
              if (pdn.bv_len) {
                     nrdn.bv_val = op->ora_e->e_nname.bv_val;
                     nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
              } else {
                     nrdn = op->ora_e->e_nname;
              }

              bdb_cache_add( bdb, ei, op->ora_e, &nrdn, ltid, &lock );

              if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
                     rs->sr_text = "txn_commit failed";
              } else {
                     rs->sr_err = LDAP_SUCCESS;
              }
       }

       ltid = NULL;
       LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
       opinfo.boi_oe.oe_key = NULL;

       if ( rs->sr_err != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
                     rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
              rs->sr_err = LDAP_OTHER;
              goto return_results;
       }

       Debug(LDAP_DEBUG_TRACE,
              LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
              op->o_noop ? " (no-op)" : "",
              op->ora_e->e_id, op->ora_e->e_dn );

       rs->sr_text = NULL;
       if( num_ctrls ) rs->sr_ctrls = ctrls;

return_results:
       success = rs->sr_err;
       send_ldap_result( op, rs );

       if( ltid != NULL ) {
              TXN_ABORT( ltid );
       }
       if ( opinfo.boi_oe.oe_key ) {
              LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
       }

       if( success == LDAP_SUCCESS ) {
              /* We own the entry now, and it can be purged at will
               * Check to make sure it's the same entry we entered with.
               * Possibly a callback may have mucked with it, although
               * in general callbacks should treat the entry as read-only.
               */
              bdb_cache_deref( oe->e_private );
              if ( op->ora_e == oe )
                     op->ora_e = NULL;

              if ( bdb->bi_txn_cp_kbyte ) {
                     TXN_CHECKPOINT( bdb->bi_dbenv,
                            bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
              }
       }

       slap_graduate_commit_csn( op );

       if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
              slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
              slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
       }
       return rs->sr_err;
}